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2025-11-18 - 10:22
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Tue Nov 18, 2025 01:01:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3440699321315,3cyclictest0-21swapper/1200:26:544
3440699321315,3cyclictest0-21swapper/1200:26:534
3437499260257,2cyclictest0-21swapper/222:38:2812
3437499260257,2cyclictest0-21swapper/222:38:2812
3437499260257,2cyclictest0-21swapper/222:38:2812
3444499258214,30cyclictest0-21swapper/3020:55:2324
3446999244211,19cyclictest15984-21CPU31
3446999244211,19cyclictest15984-21CPU31
3446999244211,19cyclictest15984-21CPU31
3444499238204,22cyclictest0-21swapper/3020:50:2024
3438599236231,2cyclictest0-21swapper/723:25:3037
3438599236231,2cyclictest0-21swapper/723:25:2937
3438599236231,2cyclictest0-21swapper/723:25:2937
3440699232213,12cyclictest0-21swapper/1223:55:204
3440699232213,12cyclictest0-21swapper/1223:55:194
3440699232213,12cyclictest0-21swapper/1223:55:194
34447992121,171cyclictest0-21swapper/3223:50:2226
34447992121,171cyclictest0-21swapper/3223:50:2226
34447992121,171cyclictest0-21swapper/3223:50:2126
343779920921,184cyclictest32437-21NetworkChangeNo22:10:2034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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